Machine for concaving wood-heel blocks



June 3, 1930. w. J. SHAW MAUI-LINE FOR CONCAVING WOOD HEEL BLOCKS Filedbct. 14 1926 3 Sheets-Sheet 1 jivewior M6566 J. sf mw 42W 6Z$$o7 1ae v lllLl Ju ne 3, 193Q. I w. J. SHAW I 1,761,026

MACHINE FOR CONC AVING WOOD HEEL BLOCKS Filed Oct. 14, 1926 3 Sheets-Sheet 4 .l five ior 112666631]. Jiutw N W @M.

June 3, 1930. w. JvSHAW MACHINE FOR CONCAVING WOOD HEEL BLOCKS Filed Oct. 14'. s Sheets-Sheet 5 H QNH Zdea'bey MW M flfio 7 7165 Patented June 3,

U IT-en STA E-S.

' LAND-WOOD HEEL co.,, or HAVE-RHIL SACI-IUSETTS MACHINE non concnvrne Woon-nnnn Brio'eKsi' Application filed October .14, 1926. Serial No.-141;479.

The present invention relates more particularly to machines for concaving wood-heel blocks, though certain features thereofare of I byith'e present invention will bemade clear in connection with the accompanying drawings in which Fig. 1 is a plan of a machine constructed' according to a preferred embodiment of the invention; .Fig. 2 is a vertical section taken'upon the l'ine.22 of Fig. 1, looking in the direction of the arrows; Figs. 3 and i are vertical sections taken upon the lines 33 and 1- 4, respectively, of Fig.1, looking in the directions of the arrows; Fig.

5 is a front elevationofthe machine, with parts broken away, for clearness; Fig. .6 1s a vertical section taken upon the line 6-6 of Fig. 1, looking in the direction of the arrows;

Fig. 7 is a section taken upon the line 77 of Fig. 8, lookingin the'directi'on of the arrows; and Fig. 8 is a side elevation of the parts [Asis explained in the above-mentioned pat ent, a heel block 2 is clamped between jawsit and 6' of a heel-blockholder "and advanced 1 towards a concaving cutter V8. ,The cutter cuts a concave groove inthe top ofthe heel block. Theconcave groovejis completed in two operations. the heel-block holder-is advanced toward'sthe cutter along a path such that one side only of the top of the heel-block shall become'con- In Fig. 1,'the side10 of thehe'elblock top is shown acted on by the-cutter,

, During this first operatiomthe carriage upon which the heel-block holder is carried is guided in its movement by a cam 12 that .en-

gages an adjustable guide roll 14. "Ihe-carriage is returned toward the left, as'viewed' 2 in Fig. 1, and then again advancedtoward the right During this second operation; how-' ever, the carriage iisguide'd by a cam16 that.

engagesan. adj ustableguideroll. 18, j with the During the first operation,

resnltthat the opposite side 2070f the top of the heelblock becomes acted upon by the" cutter. During its.firstrop eratiomthe cam 12 or the carriage is maintained 1n engagement with the guide roll 14 by a. cam- 22 that en;

minim{mi e- Y WESLEY JOHN SHAW, or HAVEREILL, ivrassacnnsnrrs,. ssienon To new E1\TG- e ,raassacnusnrrsla CORPYORATION'QF MAS- gages an arni 2ofa'bell-crank lever to force theiotherarm'26'againsta roll 28 of the vcarriagea During the secondpperation, the'cani 16 ofthe carriage is maintained in engage nient with the. guide roll 18 by a cam 30zthat engages an arm 32 ofa bell-cranklever to forcethe' other arm .34 against roll 36 of the carriage. ffihe cams'22 and .30, thatth-us cause the carriage to oscillate: transversely back and forth before each forwardrmove- =74 nient towards the cutter are mounted ona shaft 38. The bell-crank levers: are 1'6 turned to normal position, when removed from theinfiuence .of the cams 22 andSO by springs a0; The carriage oscillates about a pivot 12; shown in the said patent at e. The

pivot 42 is substantially fixedin position,but Y the carriage is slidable with: respect to this substantially fixed pointpi It will be unneces sary tode'scribe thisoperation in greater d er? tail as t is fully described in the said 'Jatent,

and is well known in the art;-

Asthe shape andthedepth of the required concavity varies in diflerent heels; provision i ismad'eifor adjusting thepositionof the heel of block relatively to the cutten This'provision takes the form of a screw la (shown in the said patent at" F) that is pivotally connected with one end of the carriageat 46. Thecarriage is slidab'le with respect to the pivot 16. The

screw iisvertically adjustable in a lug 48 of the frame offthe machine to effect the raising and the lowering of the said end of the carriage about 'a'p'ivotal shaft 50. This adjustment permits the heel to be presented to the "cutter in varying angular positions," but the degree of adpist nent 1S. very-slight. A1

reater angular ad'ustment is shown. in the drawings about a :pivot'52. The jaws l and 6 are pivot-ally mounted at 54 and 56; resp'ec tively; on a support 58' that-is adapted to be pivotally adjusted aboutthe pivot. 5 2 byfa I f threaded 'IOdgGO- The rod- 60vis threaded in a yoke 62 that is provided with openings '64; andv66 through. which extendtrod's" 68 and 70,,{

respectively, of the heel-block clamp. The rod 60 is swiveled in a pin 72 (shown more particularly in Fig. 6) that is rockably concavity of the cut may further be varied by vertically adjusting the cutter 8. The cutter 8 is carried at one end of a horizontally disposed shaft 80 that is mounted in ball bearings 82 and 84 carried by a bracket 86. The bracket 86 has two vertically disposed recesses 88'that aline with corresponding recesses 90 in the frame of the machine and in which alined recesses are mounted guides 92 for guiding the vertical movement of the bracket 86. Such vertical movement is effected by a screw 94 that is vertically thread.- ed in an overhanging arm 96 of the frame and that is swiveled to a portion 98 that prof jects outfrom the bracket 86. Bolts or .30

tightening screws 100 secure the bracket in vertically adjusted position on the frame. The screws. 100 extend through vertically elongated openings 102 in the frame and are threaded in the bracket. The vertical adjustment of the bracket effects the adjust ment, as a unit, of the shaft 80, and the cutter 8, the ffly wheel 104 and the pulley 106 mounted thereon.

It'is further necessary to adjust the position of the heel-blockholder on the carriage, so that the cuttershall not out too far longitudinally into the heel block. As is explainedin'the above-named patent, the rod 68is freely slidable through a bore in the heel-block holder and the rod 70 is threaded in another bore of the holder. By rotating the threaded rod 70, therefore,using a handle 108for such purpose-the heel-block holder may be longitudinally adjusted of the carriage. But there is a tendency for the heelblock holder to bind against the rods 68 and 7 O. This is prevented, according to the pres ent invention, by providing the holder with two'interlocked tubes 110 and 112 between through a belt 122 that passes over the pulley 106 and that is driven from an electric motor 124. As it is desired to actuate the carriage from the same motor, through the shaft 80, and as the carriage must be driven at considerably lower speed, it is necessary to provide a speed-reducing means. A small pulley 126 at one end of the shaft 80 drives a belt 128 that extends over a large pulley 130. A tension roll 182 (Fig. 3) takes up the slack in this belt 128 that is introduced by the beforedescribed adjustments of the cutter. The shaft 134 of the pulley 130 is provided with a smaller pulley 136 that, through a belt 138, drives a larger pulley 140 on a shaft 142.

This shaft is provided with a small pulley 144 for drivinga large pulley 146 through belt 148. A clutch 150 connects the pulley 146 withthe driving shaft 152 that actuates the carriagev through an eccentric 154 and a link 156.

The clutch is automatically caused to couple the pulley 146 to the shaft by the rod 68, acting through a bell-crank lever 158 and a reciprocating rod 160 that is directly connected to the clutch at 162. The rod 68 is rendered effective to actuate the clutch when it is actuated forward longitudinally of the carriage by the operator at the cross bar 164 to clamp the jaws 4 and 6 together upon a heel block interposed therebetween. hen the cross bar 164 is actuated forward, it carries with it both the rods 68 and 70, and also the support 58. This causes the tails 166 and 168 of the jaws 4 and 6, respectively, to engage cam rollers 17 0 that, acting in opposition to the spring 172, causes the jaws 4 and 6 to clamp the heel block. The same movement of the cross bar 164 that clamps the jaws together, therefore, also drives in the clutch.

The clutch is positively disconnected, according to the present invention, as soon as the carriage has performed its two above described operations, by cam 174 that rotates with the shaft 38 to a pin 176 on one end of'a lever 178 that is intermediately pivoted at 180 and the other end of which slidingly engages the rod 160 at 182 to return the latter to initial position. At the same time, anothercam 184 on the shaft 38 engages a lever 186 that is pivoted at 188 that, through a link 190, retracts the cross bar 164 to cause the opening of. the clamp jaws 4 and 6. The heel-block holder being thus returned towards the operator near the cross bar 164, and the clamp jaws being open, the heel block may be removed,

a new heel block inserted, and the operation repeated. V I

It will be understood that the invention is not-restricted to the exact embodiment thereof that is illustrated and described herein, but that modifications may be made without de ryzenoze parting from its spirit and scope, as defined in the appended claims.

What is claimed is: v 1 1. A machine for cutting a concave groove in the top of a block having,'in combination,

a concaving cutter, means for holding a heel block, means for reciprocating the holding means to two predetermined positions and for rendering the holding means inefiective when occupying one of the predetermined positions, and for rendering the holding means eilective at the second predetermined position, the holding means being adapted to present the top of the heel block to the action of the cutter in the second predetermined positiom whereby the cutterwill produce a concaving *cut. in the top of the, heel block.

- when the holding means occupies thesecond predetermined position, and means for add justing the cutter towards andfrom the second predetermined position to vary the concaving out produced in the top of the heel block by the cutter.

2. A. machine forroncaving heel blocks having, in combination, a horizontally disposed shaft, rotatable concaving cutter mounted on the shaft, means for 'holdinga heel block, means foractuating the holding adapted to he actuated to movethe heel block towards and from the cutter, whereby the Y concaving cutter is adapted to produce a con- 1 blo k is caving cut in the heel block when the heel actuated towards the cutter, means for pivotally adjusting the holding means on the carriage, and means for ad ust1ng the cutter; towards and from theipath of. movement of the carriage, the two last-named meansbeing adapted to'vary theconcavinp; out produced'by the cutter.

l. ,A inachine for cutting a concave in the top of a block having, in combination,

a con-caving cutter, a carriage, means mounted ,on the carria e' for holdin heel block means for actuating the holding'means to clamp a heel block, a lever connected with the actuating means, the carriage being adapted ,to be reciprocated-to move the. heel block towards and from thecutter to present thetop of the heel block to the action of the er and to withdraw itthere'lrom, whereie concaving-cutter is adapted to produce i3 7 a concaving cut in the tsp of thoh'eel block when the top of the heel block is presentedcutter will produce a concaving cut in the top of the heel block when the heel actuatedtowards thecutter. V I 8. A machine for concaving heel blocks having, in combination, a concaving cutter,,;

groove v 7 c .a carriage, means mounted on the carriage tothe actionoii"-the.cutteg means :forengaging theflever. to cause an unclampiing of the heel bloclralter the heel blockihasbeen con- 7 V cave d"by"the;cutter, and means for adjusting thecutter, c 5 r 5; A machine "for concavingv heel-i. blocks having, in combination a concaving' cutter, a

carriage, means mounted on the c'arriageilior holdinga heel bloclnxmeans for actuating the holding meanstoclamp a heel-block,

means controlledby the actuaiting means for actuatingthe carriage tomove the heel block towards-and fromthecutteralong a plurality of paths cofmoveinenhwhereby thecon-caving cutterissadapted to; produce. concaving out in the, heelblockwhen the heel; block is. moved towards the. cutter, means controlled; by the last-Themed means for rendering the carriage' actuating means ineffective, and means for ad usting the cutter.

J 6. A machine for cutting a concave groove n the top of block hav-1ng', in combination, a fram abracket, bearlngs carried-by the bracket a'shaft mountedinthe bearings, a rotatable concaving cutter mounted on the shaft, means" for adjusting the bracket. on

' the frame, means for securing the-bracket to the framein adjusted position, and means for hold ng a heel block,jthe holding means being adapted to be reciprocated towards; and away from the cutterto 'present-the top of I the-heel bloc'ktothej action ot-theicutterand to Withdraw it; therefrom.

having, incombination, a frame, a bracket,

ball bearings carried by the bracket, ashaft mounted in thcbearmgs, a' rotatablejcon caving cutter mountedv onthe shaft, ai'fly wheelmounted on the shalt, a pulley mount 1 ed on the shatt,,a' belt'fordriving the pulley, means for tens on ng the belt, means, for ad Justing thebraclzet on the frame, means for securing the bracket to the frame in ad .jnsted position, and means for holdingfa heel block, the hold ng means beingadapted torbe "actuated towardsand away from the whereby the :concavmg cutter is cutter,

adapted to, produce a, variable concaving cutv 1 1n the heel blockwhen theholdmg means is for holding a heel block, means for actuating A the holding means toclamp a heelfblock, a, 1 lever connected with the actuatingmeans, means controlled by theactuating means for actuating the" carriage to move the heel block towards and from the cutter along a'plurality of paths of movement, wherebythe con caving cutter is adapted to producea concaving cut in the heel block when theheel block is .moved towards the cutter, means controlled'by the last-named means for rendering the carriage-actuating means ineffec' tive, means for engaging the lever to cause an unclamping of the heel block after the heel block has been concaved by the cutter,

and means for adjustingthe cutter towards and from the path of movement of the carriage to vary the concaving out produced by the cutter. V

9. A machine for concaving heel blocks having, in combination, a'concaving cutter, a carriage, a rod mounted on the carriage, means mounted on the rod for holding a heel block, means controlled by a movement of the rod for actuating the holding means to clamp a heel block, means for actuating the carriage to move the heel block towards and from the cutter, whereby the concaving cutter is adapted to produce aconcaving out in the heel block when the heel block is moved towards the cutter, a clutch between the carriage-actuating means and the carriage, means engaged by the rod during its said movement for rendering the clutch effective, means controlled by the movement of the carriage for rendering the clutch ineffective, and means for adjusting the cutter.

10. A machine for cutting a concave groove in the top of a block having, in combination, a shaft, a rotatable concaving cutter mounted on the shaft, a carriage, means mounted on the carriage for holding a heel block, meansfor driving the shaft at relatively high speed means comprising speed-V reducing means driven from the shaft for reciprocating the carriage to move the heel bloclrtowards and from the cutter at relatively low speed to present the top of the heel block to the action of the cutter and to withdraw it therefrom, whereby the concaving cutteris adapted to produce a concaving cut in'the heel block when thetop of the heel block is presented to the action of the cutter, a clutch for connecting the carriage to its actuating means, means controlled by a movement of the carriage for rendering the clutch effective, and means operable after the heel block has been concaved for rendering the clutch inefi'ective.

In testimony whereof, I have hereunto subscribed my name.

WESLEY J. SHAW. 

